#include <string>
#include <iostream>
#include <fstream>
#include <list>

using namespace std;

class Hospital
{
public:
    string doctor_name, patient_name, patient_diagnos, num_palata;

    Hospital(const char* doctor_name = "",
        const char* patient_name = "",
        const char* patient_diagnos = "",
        const char* num_palata = "")
        :doctor_name(doctor_name), patient_name(patient_name), patient_diagnos(patient_diagnos), num_palata(num_palata){}

    void write(ostream& f) const
    {
        writeStr(doctor_name, f);
        writeStr(patient_name, f);
        writeStr(patient_diagnos, f);
        writeStr(num_palata, f);
    }
    void read(istream& f)
    {
        readStr(doctor_name, f);
        readStr(patient_name, f);
        readStr(patient_diagnos, f);
        readStr(num_palata, f);
    }
    static void ReadSortByPatientName(string path) {
        list<Hospital> l;

        ifstream fin;
        fin.open(path);

        if (!fin.is_open())
            cout << "Error open!" << endl;
        else {
            Hospital b;

            while (fin.read((char*)&b, sizeof(Hospital)))
                l.push_back(b);

            SortByPatientName(l);
            for (auto i : l)
                cout << "doctor_name: " << i.doctor_name << "\tpatient_name: " << i.patient_name << "\tpatient_diagnos: " << i.patient_diagnos << "\tnum_palata: " << i.num_palata << endl;
        }
        fin.close();
    }

    friend ostream& operator << (ostream& f, const Hospital& i)
    {
        return f << "doctor_name: " << i.doctor_name << "\tpatient_name: " << i.patient_name << "\tpatient_diagnos: " << i.patient_diagnos << "\tnum_palata: " << i.num_palata;
    }

private:

    static void writeStr(const string& s, ostream& f)
    {
        size_t l = s.length();
        f.write((const char*)&l, sizeof(size_t));
        f.write(s.data(), l);
    }
    static void readStr(string& s, istream& f)
    {
        size_t l;
        f.read((char*)&l, sizeof(size_t));
        char* str = new char[l + 1];
        f.read(str, l);
        str[l] = 0;
        s = str;
        delete[] str;
    }
    static void SortByPatientName(list<Hospital>& list) {
        list.sort([](Hospital& l1, Hospital& l2) { return l1.patient_name < l2.patient_name; });
    }
};

int main(int argc, const char* argv[])
{
    setlocale(0, "");
    Hospital x("Богданець Віктор Юрійович", "Власик Олексій Юрійович", "Загостренний апендицит", "3"), y("Богданець Віктор Юрійович", "Мельник Олексій Юрійович", "Застуда", "5");
    Hospital u, v, c;
    cout << u << "\n" << v << "\n\n";
    {
        ofstream out("text.txt", ios::binary);
        x.write(out);
        y.write(out);
    }
    {
        ifstream in("text.txt", ios::binary);
        u.read(in);
        v.read(in);
        cout << u << "\n" << v << "\n\n";
    }
}